Improvement in wood-molding machines



' ZSheets--SheetL H. A. HOLT.

Wood Molding-Machine. l 'No 159 5m Pa:entedFeb.9,-'1a75r.

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WITNESSES 4 IJVVEJVTOR PAT-EN mon HENRY A. HoLr, or wrLroN, NEW HAMPSHIRE.

IMPROVEMENT IN woon-Momma MAcHiNEs.

speeifiauonfoming par@ or Letten Patent N0.159.514, dated February 9, 1875;

` August 29, 1874.

To all whom t't may concern:

Be it known that I, HENRY A. HOLT, of Wilton, in the county of Hillsborough and State of New Hampshire, have invented an Improvement in Wood-Molding Machines; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings making part of this specificationy Figure l being a top view of the machine; Fig. 2, a vertical section thereof in a plane indicated by the line x fr, Fig. l 5 Fig. 3, a side elevation of the same; Fig. 4, aview of the under side of the carriage used on the machine; Fig. 5, view of a part detached, and bearing a different wood-working instrument 'from the kind shown inthe principal figures.

.Like letters designate corresponding parts in all of the gures.

-My invention consists in an improved machine for cutting moldings, and doing other analogous kinds of wood-workin g, having certain improved and enlarged capabilities of perfect and complete adjustment in all requisite ways, and whereby two or more kinds of work can be done upon it at the same time, all substantially as herein specified.

In the drawings, A represents a suitable frame of the requisite length and width for the work intended to be performed on the machine; B, a drivin g-shaft extending across one end of the frame, and C C driving belts running from said driving-shaft to the cutterheads or operative tools employed on the machine. These cutter-heads or tools D D are mounted on arbor-blocks, as I term them, marked E E in the drawings, which have three adjustments to adapt them to all requisite positions. First, they are pivoted at a c to vertically sliding and adjustable bearings or blocks G Gr, which slide in vertical ways in slidings and adjustable carriers H H, that in turn havea horizontal sliding and adjustable movement across the frame A in ways of or between cross-girders I I of the frame. The circular adjustments of the arbor-blocks E E upon their pivots a a. are effected, as represented, by means of endless screws or wormwheels L L, gearing into cogged edges b b of the arbor-blocks, as shown in Fig. 2, so that the arbor-shafts or cutter-heads D D may be applic ation filed adjusted to any angular position between a horizontal and a perpendicular position. The shafts c c, of the endless screws L L may be turned direct by means of milled heads or cranks d d on their lower ends; but it may be more convenient to gear them to horizontal shafts reaching out through one side of the frame A, and terminating in cranks. To whatever position these arbor-blocks may be adjusted, they may be secured firmly in any position between the girders I I by clamps e, or by pins passing through them andthe girders. The bearings Gr Gr of the arbor-blocks are adjustcd up and down by means of set-screws f f, or their equivalents, turning in the carriers H H, as shown in Fig. 2; or they may also gear with horizontal crank-shafts. The carriers H H are .adjusted horizontally between the girders I I by means of long screw-rods g g, turning in nuts hh of the carriers, and having their bearings in the sides of the frame A. The girders I I themselves may be adjusted laterally in the frame A by being mounted in blocks i t', which slide in the frame, and are moved by adjusting-screws k k, the shafts of which are geared to adjusting-shafts ZZ, in the frame. By this means the driving-belts (l C may be tightened or loosened. Thus the cutter-heads or tools D D may be adapted to cut in any position or on anyside of the stud' to be operated upon, and any number of them mayoperate at the same time, limited only by the width of the frame or length of the girders 5 and two or more sets of girders may be used to receive additional arbor-blocks and tools. Different arbor-blocks may bear dii'erent kinds of tools or cutter-heads for cutting moldings or other work, or they may carry saws. One kind is shown in Fig. 2, and another is illustrated in Fig. 5.

In connection with this machine, I use a carriage of peculiar construction (shown in dotted lines in Fig. 1, and separately in Fig. 4) for holding and feeding along the stuff to be operated upon. It has guides m m m m to slide over ways n n on the frame A of the machine. These guides are adjustable laterally by set-screws o o, to produce accuracy of motion. Those on one side only need be adj usted. rlhe carriage has a holding-bar, p, which may be fixed, and another bar, r, which is adjusted laterally to anyposition on the carriage within desired limits by means of traveling pinions s s in the bar, and stationary racks t t on the sides of the carriage, the pinions being mounted on a single shaft, u, to be turned by a milled head or crank, o. On this bar, which has a longitudinal Way or groove, w, is mounted a rest, y, Which slides on the bar for feeding along light stuft' While the carriage is at rest.

What I claim as my invention, and desire to secure by Letters Patent, is

l. The combination of the arbor-blocks E E, bearings G Gr, carriers H H, and girders or cross-ways I I, all constructed and operated substantially as and for the purpose herein specified.

2. In combination with the arbor-blocks E E, bearings G G, carriers H H, and girders I I, constructed and operated as described, the carriage provided with the laterally-movable bar r, arranged substantially as and for the 'purpose herein specied. 

